<!DOCTYPE html>
<html>
<head>
  <meta charset="UTF-8">
  <meta http-equiv="X-UA-Compatible" content="IE=edge">
  <meta name="viewport" content="width=device-width, initial-scale=1.0">
  <title>Document</title>
</head>
<body>
  <div id="app">
    {{ msg }}
    <hr>
    ①
    <input type="radio" v-model="imgSrc" value="https://img.tupianzj.com/uploads/allimg/202103/9999/914fab1997.jpg">
    ②
    <input type="radio" v-model="imgSrc" value="https://img.tupianzj.com/uploads/allimg/202102/9999/8b45bc942e.jpg">
    ③
    <input type="radio" v-model="imgSrc" value="https://ss3.bdstatic.com/70cFv8Sh_Q1YnxGkpoWK1HF6hhy/it/u=4230130301,2449898948&fm=26&gp=0.jpg">
    <input type="radio" v-model="imgSrc" value="
    https://img.tupianzj.com/uploads/allimg/202012/9999/950b992764.jpg">
    <hr>
    <img :src="imgSrc" alt="">
    <hr>
    <button :aa="msgs">按钮</button>
  </div>
</body>
<script src="./vue.js"></script>
<script>
  const vm = new Vue({
    el: '#app',
    data: {
      msg: 'hi Vue',
      imgSrc:'https://ss3.bdstatic.com/70cFv8Sh_Q1YnxGkpoWK1HF6hhy/it/u=4230130301,2449898948&fm=26&gp=0.jpg',
      msgs:'我是aa'
    }
  })
</script>
</html>